Omnibox - Keyword Provider Shouldn't Bold What-You-Typed Queries

Currently we don't bold what-you-typed queries from the default search
provider, not do we bold what-you-typed queries when the keyword is
typed exactly.  We do bold what-you-typed queries for inexact keywords.

The change makes it so we don't.

It also retires a string that is no longer needed after this change.

BUG=593245

Review URL: https://codereview.chromium.org/1784233003

Cr-Commit-Position: refs/heads/master@{#385323}
diff --git a/components/omnibox_strings.grdp b/components/omnibox_strings.grdp
index 96191f1b7..8e9c7d2b 100644
--- a/components/omnibox_strings.grdp
+++ b/components/omnibox_strings.grdp
@@ -4,14 +4,8 @@
   <message name="IDS_AUTOCOMPLETE_SEARCH_DESCRIPTION" desc="Description for the default search match.">
     <ph name="ENGINE">$1<ex>Google</ex></ph> Search
   </message>
-  <message name="IDS_KEYWORD_SEARCH" desc="The description for a chrome keyword search match in the Omnibox dropdown">
-    Search <ph name="SITE_NAME">$1<ex>www.google.com</ex></ph> for <ph name="SEARCH_TERMS">$2<ex>flowers</ex></ph>
-  </message>
-  <message name="IDS_EXTENSION_KEYWORD_COMMAND" desc="The description for an extension keyword command match in the Omnibox dropdown">
-    Run <ph name="EXTENSION_NAME">$1<ex>Google Talk</ex></ph> command: <ph name="SEARCH_TERMS">$2<ex>[email protected]</ex></ph>
-  </message>
   <message name="IDS_EMPTY_KEYWORD_VALUE" desc="Shown in the location bar drop down when the user enters a string that matches a chrome keyword, but they haven't entered any text following the chrome keyword">
-    &lt;enter query&gt;
+    &lt;Type search term&gt;
   </message>
   <message name="IDS_LINK_FROM_CLIPBOARD" desc="The label in the omnibox dropdown explaining that the link has been extracted from the user's clipboard. [Length: 21em]">
     Link you copied